Phrases

take the offensive

begin to attack, attack first, be aggressive, strike the first blow, start a war/battle/quarrel

informal be on the warpath

Choose the right word

offensive, derogatory, insulting

These words all describe remarks or behaviour that cause offence or distress, unconsciously or intentionally.Offensive remarks or behaviour make someone hurt, upset, or angry, whether or not the speaker realizes or intends this (the wording was unnecessarily offensive | the work is trite and offensive to women). An offensive term for a person, such as someone of a particular ethnic type, may offend others, not just those of that ethnicity.A derogatory comment is deliberately intended to express a low opinion of someone or something (derogatory racial remarks | I found myself repelled by the use of derogatory nicknames).Insulting language or behaviour shows a lack of respect (the Minister's reply is arrogant and insulting | the cartoon is insulting to men). It is generally, but not necessarily, intended to upset or annoy.